I have been reading about JT-9 recently. It seems that since Joe Large has discontinued support for JT-65HF (due to health issues), JT9 is filling the bill. Has anyone tried JT9 yet? What about the new integration with JT-Alert? I think I will have to give it a try this week.
I also fond out that JT-1 is the typical mode used on HF. You can also use JT9-30 which means each interaction sis 30 minutes. Surely, this cannot mean we transmit for 30 minutes at a time. That is for really weak signal work.